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Optimized integrated design of a high-frequency medical ultrasound transducer with genetic algorithm
, Article SN Applied Sciences ; Volume 3, Issue 6 , 2021 ; 25233971 (ISSN) ; Chabok, H. R ; Nejat Pishkenari, H ; Sharif University of Technology
Springer Nature
2021
Abstract
Designing efficient acoustic stack and elements for high-frequency (HF) medical ultrasound (US) transducers involves various interrelated parameters. So far, optimizing spatial resolution and acoustic field intensity simultaneously has been a daunting task in the area of HF medical US imaging. Here, we introduce optimized design for a 50-MHz US probe for skin tissue imaging. We have developed an efficient design and simulation approach using Krimholtz, Leedom and Matthaei (KLM) equivalent circuit model and spatial impulse response method by means of Field II software. These KLM model and Field II software are integrated, and a GA algorithm is used to optimize the design of the US transducer...
Design of a broadband high frequency ultrasound transducer for skin imaging
, Article 6th RSI International Conference on Robotics and Mechatronics, IcRoM 2018, 23 October 2018 through 25 October 2018 ; 2019 , Pages 261-265 ; 9781728101279 (ISBN) ; Chabok, H. R ; Nejat, H ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2019
Abstract
This paper discusses the design of a high frequency wide bandwidth ultrasound transducer with the center frequency of 50 MHz and an aperture diameter of 3 mm for medical ultrasonic imaging. The piezoelectric material used in this design is Lithium Niobate. The design is verified by both KLM equivalent circuit and spatial impulse response method as used in FIELD II software and the theoretical imaging resolution has been calculated as 50 um axially and 80 um laterally. The possible applications of this probe are skin layer imaging, tumor detection and superficial blood flow measurement